*{
    margin: 0;
    padding: 0;
}
a{
    text-decoration: none;
}
ul li{
    list-style: none;
}

.nav{
    width: 100%;
    height: 220px;
    position: relative;
}
.nav .bottom ul li .xiala1{
    width: 100%;
    height: 0px;
    overflow: hidden;
    position: absolute;
    background: white;
    transition: all 0.5s;
    left: 0;
    z-index: 2;
}
.nav img{
    position: absolute;
    width: 86px;
    height: 50px;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0 auto;
}
.nav .bottom{
    width: 100%;
    height: 50px;
    position: absolute;
    bottom: 0;
    left: 0;
    border-bottom: 1px solid #eeeeee;
}
.nav .bottom ul{
    width: 770px;
    height: 50px;
    line-height: 50px;
    margin-left: 60px;
}
.nav .bottom ul li{
    float: left;
    margin-right: 70px;
    font-size: 20px;
    font-weight: 900;
}
.nav .bottom ul li:hover .xiala1{
    height: 325px;
    border-bottom: 2px solid;
}
.nav .bottom ul li a{
    color: black;
    display: inline-block;
    height: 35px; 
}
.nav .bottom form{
    position: absolute;
    bottom: 12px;
    right: 45px;
    width: 180px;
    height: 25px;
    border-bottom: 1px solid #333333; 
}
.nav .bottom form .input1{
    width: 162px;
    height: 25px;
    float: left;
    outline: none;
    border: none;   
}
.nav .bottom form .input2{
    width: 18px;
    height: 25px;
    float: left;
    border: none;
    outline: none;
    background: url(../images/cssjltu.png) -177px -10px white;
}
.nav .bottom ul li a:hover{
    border-bottom: 2px solid black;
}
.swiper-container{
    width: 100%;
    height: 550px;
    border-top: 1px solid #eeeeee;
}
.swiper-container .swiper-wrapper{
    width: 100%;
    height: 550px;
    position: relative;
    margin-bottom: 72px;
}
.swiper-container .swiper-wrapper li{
    width: 100%;
    height: 550px;
    position: absolute;
}
.swiper-container .swiper-wrapper #lunbo1 a{
    display: inline-block;
    width: 100%;
    height: 550px;
    background: url(../images/1.jpg) center;
}
.swiper-container .swiper-wrapper #lunbo2 a{
    display: inline-block;
    width: 100%;
    height: 550px;
    background: url(../images/2.jpg) center;
}
.swiper-container .swiper-wrapper #lunbo3 a{
    display: inline-block;
    width: 100%;
    height: 550px;
    background: url(../images/3.jpg) center;
}
.swiper-container .swiper-wrapper #lunbo4 a{
    display: inline-block;
    width: 100%;
    height: 550px;
    background: url(../images/4.jpg) center;
}
.swiper-container .swiper-pagination{
    margin-left: 500px;
}
.swiper-container .swiper-pagination-bullet{
    width: 20px;
    height: 5px;
    border-radius: 0%;
    background: #45410f; 
}
.newPin{
    width: 100%;
    height: 570px;
    text-align: center;
    margin-top: 75px;
    overflow: hidden;
    margin-bottom: 50px;
}
.newPin .top{
    width: 100%;
    height: 105px;
    margin-bottom: 30px;
}
.newPin .top h1{
    font-size: 42px;
}
.newPin .top p{
    display: inline;
    line-height: 90px;
    margin: 0 12px;
    border-bottom: 1px solid black;
}
.newPin .bottom{
    width: 1190px;
    height: 415px;
    margin: 0 auto;
}
.newPin .bottom ul{
    width: 920px;
    height: 415px;
    margin: 0 auto;
}
.newPin .bottom ul li{
    width: 230px;
    height: 406px;
    float: left;
    position: relative;
}
.newPin .bottom ul li>i>a{
    display: inline-block;
    width: 15px;
    height: 15px;
    background: url(../images/cssjltu.png) -38px -243px;
    position: absolute;
    right: 20px;
    bottom: 38px;
    display: none;
}
.newPin .bottom ul li:hover{
    background: #f6f6f6;
}
.newPin .bottom ul li:hover i>a{
    display: block;
}
.newPin .bottom ul li>p{
    font-size: 12px;
    line-height: 30px;
}
.newPin .bottom ul li>span{
    font-weight: bold;
}
.newPin .bottom ul li>p>a{
    color: #666;
}
.newPin .bottom ul li>img{
    width: 54px;
    height: 24px;
    margin-top: 10px;
}
.newPin .bottom ul li>a>div{
    width: 210px;
    height: 270px;
    margin-left: 10px;
    margin-top: 10px; 
    background: white;
}
.newPin .bottom ul li>a>div>img{
    width: 210px;
    height: 210px;
    margin-top: 30px;
}
.main{
    width: 100%;
    height: 1760px;
}
.main .main_top{
    width: 100%;
    height: 780px;
    text-align: center;
}
.main .main_top h2{
    font-size: 42px;
}
.main .main_top p{
    display: inline;
    line-height: 90px;
    margin: 0 12px;
    border-bottom: 1px solid black;
}
.main .main_top ul{
    width: 990px;
    height: 402px;
    margin: 0 auto;
    margin-top: 65px;
    display: flex;
    justify-content: space-between;
}
.main .main_top ul li{
    float: left;
    width: 315px;
    height: 402px;  
}
.main .main_top ul li:nth-child(1) a{
    display: inline-block;
    width: 315px;
    height: 402px;
    background: url(../images/main_top_1.jpg) no-repeat center;
}
.main .main_top ul li:nth-child(2) a{
    display: inline-block;
    width: 315px;
    height: 402px;
    background: url(../images/main_top_2.jpg) no-repeat center;
}
.main .main_top ul li:nth-child(3) a{
    display: inline-block;
    width: 315px;
    height: 402px;
    background: url(../images/main_top_3.jpg) no-repeat center;
}
.main .main_top ul li:nth-child(1) :hover{
    background: black url(../images/main_top_01.png) no-repeat center;
}
.main .main_top ul li:nth-child(2) :hover{
    background: black url(../images/main_top_02.png) no-repeat center;
}
.main .main_top ul li:nth-child(3) :hover{
    background: black url(../images/main_top_03.png) no-repeat center;
}
.main .main_top .main_nav{
    width: 990px;
    height: 172px;
    margin: 0 auto;
    position: relative;
}
.main .main_top .main_nav .main_nav_left{
    width: 12px;
    height: 22px;
    display: inline-block;
    background: url(../images/main_nav.png) no-repeat 0 -71px;
    position: absolute;
    top: 50%;
    left: 0;
}
.main .main_top .main_nav .main_nav_right{
    width: 12px;
    height: 22px;
    display: inline-block;
    background: url(../images/main_nav.png) no-repeat -13px -71px;
    position: absolute;
    top: 50%;
    right: 0;
}
.main .main_top .main_nav .nav2{
    width: 920px;
    height: 40px;
    position: absolute;
    top: 46%;
    left: 35px;
}
.main .main_top .main_nav .nav2 a{
    display: inline-block;
    width: 68px;
    height: 31px;
    margin: 0 12px;
}
.main .main_top .main_nav .nav2>a>img{
    width: 68px;
    height: 31px;
}
.main .main_bottom{
    width: 100%;
    height: 980px;
    text-align: center;
    overflow: hidden;
}
.main .main_bottom h3{
    font-size: 42px;
    margin-top: 85px;
}
.main .main_bottom>p{
    font-size: 22px;
}
.main .main_bottom ul{
    width: 994px;
    height: 463px;
    margin: 0 auto;
    margin-top: 45px;
    display: flex;
    justify-content: space-between;
}
.main .main_bottom ul li{
    width: 315px;
    height: 463px;
}
.main .main_bottom .bottom_ul2{
    width: 990px;
    height: 250px;
    margin: 0 auto;
    margin-top: 45px;
    display: flex;
    justify-content: space-between;
}
.main .main_bottom .bottom_ul2 li{
    width: 231px;
    height: 250px;
    position: relative;
}
.main .main_bottom .bottom_ul2>li p{
    width: 100%;
    height: 250px;
    font-size: 14px;
    z-index: 9;
    display: inline-block;
    position: absolute;
    left: 0;
    top: 0;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    line-height: 250px;
    text-align: center;
    display: none;
}
.main .main_bottom .bottom_ul2 li:hover p{
    display: block;
}